I am late to it but let me make a guess.
The OP placed a bet, odd changed from 2.15 to 1.5, the accepted odd was 1.5 and the stake was $1000. But then OP lost the bet. You refunded the bet that was placed instead of making it a loss bet. If this was a winning bet then it does not make sense for OP to be happy with the refund only, he would needed his investment and the profit.
It's the other way round. The odd was 1.5 then it rose to 2.15 around about the same time OP was placing it. The system accepted the 1.5 odd instead of notifying him that the odds had changed. OP lost the bet, but he has been refunded the initial stake given system error which is fair enough.
It disappeared from history as you can see on that screenshots. Luckly I have that screenshot...
Are you trying to say what we are seeing right now in the screenshot completely disappeared afterward?